Add explicit nullable annotation for clarity

Copilot · YBTopaz8 · YBTopaz8 · commit aa05036b9b62 · 2026-01-08T11:48:33.000+01:00
Co-authored-by: YBTopaz8 &lt;41630728+YBTopaz8@users.noreply.github.com&gt;
diff --git a/Dimmer/Dimmer.WinUI/Utils/WinMgt/WinUIWindowMgrService.cs b/Dimmer/Dimmer.WinUI/Utils/WinMgt/WinUIWindowMgrService.cs
@@ -158,7 +158,7 @@ public WinUIWindowMgrService(IServiceProvider mauiServiceProvider)
     {
         if (callerVM == null) return null;
 
-        T targetWindow = null;
+        T? targetWindow = null;
 
         if (_trackedUniqueTypedWindows.TryGetValue(typeof(T), out var existingGenericWindow) && existingGenericWindow is T existingTypedWindow)
         {

Original file line number	Diff line number	Diff line change
`@@ -158,7 +158,7 @@ public WinUIWindowMgrService(IServiceProvider mauiServiceProvider)`
`158`	`158`	`{`
`159`	`159`	`if (callerVM == null) return null;`
`160`	`160`
`161`		`- T targetWindow = null;`
	`161`	`+ T? targetWindow = null;`
`162`	`162`
`163`	`163`	`if (_trackedUniqueTypedWindows.TryGetValue(typeof(T), out var existingGenericWindow) && existingGenericWindow is T existingTypedWindow)`
`164`	`164`	`{`